JAC J4 (Heyue A30)

JAC J4 (Heyue A30): Which Version to Buy and Why

The choice between the two JAC J4 (Heyue A30) versions comes down entirely to transmission preference. The 1.5 MT and 1.5 CVT share the same 1,499 cc Gasoline engine, 113 hp output, 146 Nm of torque, FWD layout, acceleration time, weights, ground clearance, fuel tank, suspension, and brakes. The 1.5 MT provides a 5-speed Manual gearbox, while the 1.5 CVT uses a Variable transmission.

The choice between the two JAC J4 (Heyue A30) versions comes down entirely to transmission preference. The 1.5 MT and 1.5 CVT share the same 1,499 cc Gasoline engine, 113 hp output, 146 Nm of torque, FWD layout, acceleration time, weights, ground clearance, fuel tank, suspension, and brakes. The 1.5 MT provides a 5-speed Manual gearbox, while the 1.5 CVT uses a Variable transmission. Since the supplied data contains no prices, fuel-consumption measurements, or reliability results, neither version can be declared cheaper to buy, cheaper to run, or more dependable.

JAC J4 generations compared

The JAC J4 (Heyue A30) has one generation in the supplied catalogue data, so there is no earlier or later generation to compare. The 1 generation was produced from 2013 through 2019 as a Sedan and includes two versions: 1.5 MT and 1.5 CVT.

Both versions were available across the same 2013–2019 production period. No restyling or generation-level mechanical change is listed, meaning the buying decision is between two transmissions within the same generation rather than between different generations.

JAC J4 engine and specs

Both versions use the same naturally aspirated engine specification: 1,499 cc, Gasoline, 4 cylinders in an Inline layout, and 4 valves per cylinder. The engine is mounted Front, transverse and uses Distributed injection (multi-point). Output is 113 hp (83 kW) at 6000 rpm, while peak torque is 146 Nm at 4000 rpm. Both versions require 95 fuel and comply with Euro 5.

The calculated specific output is approximately 75.4 hp per litre for both 1.5 MT and 1.5 CVT. Torque density is approximately 97.4 Nm per litre in either version. These calculations do not separate the two cars because their displacement, power, and torque figures are identical.

With a kerb weight of 1,110 kg and output of 113 hp, each version carries approximately 9.82 kg per horsepower. Expressed the other way around, both provide approximately 101.8 hp per tonne of kerb weight. The transmission is therefore the only listed powertrain difference.

JAC J4 performance and mpg

The 1.5 MT accelerates from 0 to 100 km/h in 13.5 seconds. The 1.5 CVT also accelerates from 0 to 100 km/h in 13.5 seconds, so the supplied figure gives neither transmission a performance advantage.

Top speed is not measured for either version. City, highway, and combined fuel consumption are also not measured, so an mpg comparison cannot be made from the supplied data. CO₂ output is not measured for either version. Any claim that the Manual or Variable transmission is faster or more economical would go beyond the available figures.

JAC J4 dimensions, weight, and ground clearance

The supplied data lists the same weight and utility-related specifications for both versions.

Gross weight exceeds kerb weight by 375 kg in both cases. Neither transmission brings a listed weight penalty: the 1.5 MT and 1.5 CVT each weigh 1,110 kg in kerb form and 1,485 kg at gross weight. Both have 125 mm of ground clearance and a 45-litre tank. Wheel sizes are not measured.

The chassis specification is also shared. Both versions have Independent, spring front suspension and Semi-independent, spring rear suspension. Braking hardware consists of Ventilated disc brakes at the front and Drum brakes at the rear.

JAC J4 reliability and problems

Reliability results and recorded problems are not measured in the supplied data. There are no failure rates, maintenance costs, repair histories, or component-life figures with which to rank the 1.5 MT against the 1.5 CVT. The technical data confirms that the versions share their engine output and core chassis specifications, but that alone does not establish equal reliability.

Which JAC J4 version should you buy?

Choose the 1.5 MT if a 5-speed Manual gearbox is your preferred way to control the car. It gives up nothing in the listed performance figures: its 113 hp, 146 Nm, and 13.5-second 0–100 km/h time match the 1.5 CVT exactly. It also has the same 1,110 kg kerb weight, 125 mm ground clearance, and 45-litre tank.

Choose the 1.5 CVT if you specifically want the Variable transmission. According to the supplied numbers, that change does not alter engine output, acceleration, weight, drive layout, tank capacity, suspension, or braking specification. What any extra purchase cost might buy is therefore limited, in the available data, to a different transmission type—but prices are not measured, so the size of that premium cannot be assessed.

There is no numerical basis for calling either version the universal best buy. The 1.5 MT is the clear match for a buyer who wants Manual, and the 1.5 CVT is the clear match for a buyer who wants Variable. If fuel economy, top speed, reliability, or price will decide the purchase, those factors require additional evidence because every relevant figure is not measured in the supplied catalogue data.